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Solar panel installation in Tenerife: generate your own power
Grid-connected self-consumption systems for villas, houses, apartments and businesses across the south of Tenerife. Sized from your real consumption, installed to the REBT and legalised so your surplus is compensated under RD 244/2019.
What a PiconSolar installation includes
| Part | What we install | What we check |
|---|---|---|
| Modules | Monocrystalline panels from established manufacturers | Datasheet Pmax, temperature coefficient, product and performance warranty |
| Mounting structure | Aluminium structure for flat or pitched roofs, with an air gap behind the modules | Wind load, roof type, fixings and waterproofing |
| Inverter | String or hybrid inverter, single or three phase to match your supply | MPPT voltage window, max input current, battery compatibility |
| DC side | Solar cable H1Z2Z2-K, matched connectors, DC isolator, DC surge protection | Polarity, Voc, Isc and insulation resistance |
| AC side | Dedicated circuit, breaker and RCD into your consumer unit | Cable size for current and voltage drop, protection coordination |
| Monitoring | Inverter app and consumption meter where needed | Production and consumption visible on your phone |
| Paperwork | Certificate, registration, compensation contract | Everything filed before handover |
How we size a system
A system is sized from your consumption profile, not from the roof area and not from a standard package. We look at 12 months of bills, your contracted power and when in the day you use energy.
The compensation cap
Under RD 244/2019 simplified compensation, exported surplus is credited on your bill, but the credit cannot exceed the energy part of that month’s bill. You can take the energy charge to zero, not below. An oversized system gives energy away for nothing, which is why we size to consumption and consider a battery only when evening use justifies it.
Daytime loads are the best case
Air conditioning, pool pumps, heat pumps and home offices use power when the panels produce it. A villa with a pool in the south is the strongest solar case on the island.
Shade matters more than orientation
At this latitude the sun is high for most of the year, so south, south-east and south-west roofs perform within a few per cent of each other. Shade from a water tank, an aerial or a neighbour’s wall does far more damage, because one shaded module can pull down a whole string. We design strings around the shade, or use module-level optimisation where it pays.
Heat
Module output falls as cell temperature rises. We keep an air gap behind the panels and keep the inverter out of direct sun so it does not derate.
How the installation runs
Free survey
Roof, shading at different sun angles, consumer unit, meter and cable route, on site.
Written quote
Every component with its model number, labour and paperwork, and the expected annual generation.
Installation
Typically one to two days for a domestic system.
Testing
String tests, insulation resistance, protection tests and a written test record.
Legalisation
Certificate, registration of the self-consumption installation and the compensation contract with your retailer.
The paperwork that makes it legal
| Step | What it does |
|---|---|
| CIE (boletín eléctrico) | The low-voltage installation certificate filed with the Gobierno de Canarias. Required by law and by every grant scheme |
| Self-consumption registration | Every self-consumption installation in the Canaries has to be registered |
| Distributor and retailer | The distributor updates the supply point and the retailer signs the compensation contract so surplus is credited |
Frequently asked questions
Do I need a battery?
Only if most of your consumption is after dark or you want backup. For daytime use, the same money in panels usually returns more. See solar batteries.
Can I install on a community roof?
Yes, with the community’s agreement. Shared self-consumption between several owners is also possible.
Does the system work in a power cut?
A standard grid-tied inverter shuts down during a cut. Backup needs a hybrid inverter, a battery and a backup circuit.
How much maintenance does it need?
A yearly visual check, connector and protection check, and cleaning when calima dust builds up.
Talk to the electrician before you buy
Send a recent bill and a photo of the roof on WhatsApp. You get an honest first answer, including when it is not worth doing.
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